– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 am Wed 21 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Wed 21 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Very mild (max 18°C on Wed afternoon, min 5°C on Thu night). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 4mm), mostly falling on Sat night. Very mild (max 14°C on Mon afternoon, min 6°C on Sat morning). Wind will be generally light. | |||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | |  | | | |  |  | |  | |  | | |
clear | clear | clear | cloudy | cloudy | some clouds | clear | some clouds | some clouds | cloudy | cloudy | light rain | rain shwrs | cloudy | rain shwrs | cloudy | light rain | rain shwrs | |
Cloud base (m) | 8650 | 8550 | 8300 | 6900 | 2850 | 2000 | 1550 | 750 | 2850 | 2750 | 2450 | 2450 | 2600 | 2950 | 2850 | 3000 | 1850 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 3 | 0.1 | — | 0.1 | — | 0.1 | 0.2 |
max °C | 17 | 18 | 13 | 12 | 12 | 8 | 8 | 10 | 6 | 9 | 9 | 9 | 11 | 13 | 12 | 13 | 14 | 11 |
min °C | 13 | 16 | 11 | 10 | 10 | 5 | 5 | 9 | 5 | 6 | 9 | 6 | 9 | 13 | 10 | 11 | 12 | 8 |
chill °C | 13 | 16 | 11 | 10 | 10 | 5 | 5 | 9 | 5 | 6 | 9 | 4 | 8 | 13 | 10 | 11 | 12 | 8 |
Freezing level m | 2950 | 2950 | 2850 | 2500 | 2150 | 1800 | 1750 | 1900 | 1750 | 1850 | 2100 | 2250 | 2500 | 2550 | 2650 | 2450 | 2250 | 2050 |
 | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — |
 | — | 6:07 | — | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 18°C on Wed afternoon, min 5°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 4mm), mostly falling on Sat night. Very mild (max 14°C on Mon afternoon, min 6°C on Sat morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table.For a wider overview of the weather, consult the Weather Map of Washington.